Phaser 3140/3155/3160 Printer Service Manual
5-9
Print-Quality Troubleshooting
Repeating Defects
When horizontal lines or spots occur repetitively, it could indicate a roller defect.
Measure the interval of the print defect and check the measurement against the
roller diameters in the table. The interval does not necessarily match the
circumference of the roller.
Roller Dimensions
Roller
Circumference
Abnormal
Image
Part
Parts List
No.
OPC Drum
75.3 mm
(2.96 in)
White spots,
Black spots
Print
Cartridge
PL1.0.12
Charge Roller
37.5 mm
(1.48 in)
Ghosting, Black
spot and
Periodic band
Print
Cartridge
PL1.0.12
Supply Roller
49 mm
(1.93 in)
Periodic bands
of different
density
Print
Cartridge
PL1.0.12
Developing
Roller
35 mm
(1.38 in)
White spots,
Black bands
Print
Cartridge
PL1.0.12
Transfer Roller
Ghosting or
poor fusing
Transfer
Roller
PL1.0.8
Pressure Roller
Background
Fuser
PL9.0.34
Heat Roller
Black spot and
image ghost
Fuser
PL9.0.36
s3160-141
OPC Drum
Charge Roller
Heat Roller
Transfer Roller
Supply Roller
Developing Roller
Pressure Roller